Petronne Corporation uses G.I. Metal Rolls and Zingalume for manufacturing light metal framing which is being used for Ceiling and Wall partition.
The G.I. Metal Rolls conforms to JIS-G3302.  They are made of hot-dipped zinc-coated commercial forming steel. 
  
Minimum yield strength is 250Mpa.
Minimum tensile strength is 330Mpa.
Normal coating class is Z180.
Surface condition is minimized spangle.
 
The typical chemical composition are as follows:
Carbon 

0.04 - 0.07
Phosphorus

0.01 - 0.02
Manganese

0.20 - 0.30
Sulfur 0.01 - 0.02
Silicon 0.01 - 0.02
Aluminum 0.03 - 0.05
Nitrogen 0.001 - 0.004
ZINGALUME  CHEMICAL ANALYSIS AND MECHANICAL TEST 
SPECIFICATION :  AS 2728
PRODUCT :  P-ZACS SC70 0.400 mm x 1200 mm AZ70 G300
CHEMICAL TEST - CHEMICAL COMPOSITION PERCENT 
Carbon 0.060 Nickel 0.040
Phosphorus 0.010 Chromium 0.040
Manganese 0.210 Copper 0.050
Silicon 0.010 Molybdenum 0.005
Sulfur 0.019 Titanium 0.005
Aluminum 0.040 Tin 0.002
Nitrogen 0.0040 Niobium 0.005
CHEMICAL ANALYSIS SUPPLIED BY THE STEELMAKER BASIC OXYGEN STEELMAKING PROCESS
 
MECHANICAL TEST COATING MASS - g/m2
Thickness : 0.4 mm

Totals

 Triple

83
Yield Strength : 342 Mpa

Single

71
Tensile Strength : 396 Mpa

One Surface

 Single

30
Elongation : Gauge Length 80 mm
% 26
Hardness : 53 HR30T
Bend Test : Pass
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